scholarly journals Plasma Transferred Arc (PTA) Cladding and TOPTIG Cladding of Tubes Made of Steel 13CrMo4-5

2021 ◽  
pp. 37-45
Author(s):  
Janusz Rykała ◽  
Maciej Różański

The article presents test results concerning the effect of a cladding method and technological process parameters on geometrical properties and dilution of overlay welds. Test overlay welds were deposited on tubes made of steel 13CrMo4-5. The chemical composition of the filler material used in the deposition process corresponded to that of alloy Inconel 625. The study involved the performance of macro and microscopic metallographic tests of the overlay welds as well as the identification of related dilution. The study also included hardness measurements involving the cross-section of the overlay welds as well as tests of the chemical composition of the overlay weld surface (paying attention to the maximum content of iron in the overlay weld, which should not exceed 5%). Adopted PTA and TOPTIG cladding parameters enabled the satisfaction of the maximum criterion related to the acceptable content of iron in the overlay weld, ensuring the stability of the cladding process and the invariable geometry of the overlay welds around the entire tube circumference.

2020 ◽  
Vol 92 (3) ◽  
pp. 55-65
Author(s):  
Beata Skowrońska ◽  
Wojciech Sokołowski ◽  
Reyhaneh Rostamian

The paper presents the results of research aimed at detecting the causes of premature wear of molds for glass shaping, manifesting the formation of pits in the Plasma Transferred Arc pad-welds in which the working surface of the mold was shaped. The weld microstructure was tested, the chemical composition was determined in the pad-weld’s cross-section, linear and surface chemical distributions were made in the pad-weld’s cross-section, the surface morphology in damaged areas, and the chemical composition of surface inclusions were examined. The too high temperature of formed glass associated with wettability of the glass of the mold was indicated as the primary cause of premature mold wear.


Author(s):  
Regina Paula Garcia ◽  
Temístocles de Sousa Luz ◽  
Sheila Cristina Canobre ◽  
Henara Lillian Costa

2013 ◽  
Vol 1 (4) ◽  
pp. 305-313 ◽  
Author(s):  
P. Bhargava ◽  
C. P. Paul ◽  
C. H. Premsingh ◽  
S. K. Mishra ◽  
Atul Kumar ◽  
...  

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